Weather History for St. Charles, MO

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Wednesday, September 18, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 76 °F 69 °F  
Max Temperature 88 °F 79 °F 97 °F (1925)
Min Temperature 64 °F 60 °F 42 °F (1973)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 7  
Since 1 July heating degree days 8  
Cooling Degree Days 10 6  
Month to date cooling degree days 153  
Year to date cooling degree days 1552  
Growing Degree Days 26 (Base 50)    
Moisture  
Dew Point 66 °F    
Average Humidity 81    
Maximum Humidity 97    
Minimum Humidity 53    
Precipitation  
Precipitation 0.18 in 0.10 in 1.04 in (2001)
Month to date precipitation 1.85  
Year to date precipitation 29.60  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2013)
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Since 1 September snowfall 0.0  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 4 mph (SE)    
Max Wind Speed 12 mph    
Max Gust Speed -    
Visibility 6 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 18, 2013 Rise Set
Actual Time 6:46 AM CDT 7:04 PM CDT
Civil Twilight 6:19 AM CDT 7:31 PM CDT
Nautical Twilight 5:48 AM CDT 8:02 PM CDT
Astronomical Twilight 5:16 AM CDT 8:34 PM CDT
Moon 6:28 PM CDT (9/18) 5:48 AM CDT (9/18)
Length of Visible Light 13h 12m
Length of Day
12h 18m
Waxing Gibbous, 99% of the Moon is Illuminated
Sep 18
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter

Hourly Weather History & Observations

Time (CDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 64.9 °F - 62.1 °F 90% 30.06 in 6.0 mi Calm Calm - 0.00 in Rain Light Rain
1:54 AM 64.9 °F - 62.1 °F 90% 30.07 in 8.0 mi North 3.5 mph - 0.00 in   Overcast
2:54 AM 64.9 °F - 63.0 °F 93% 30.07 in 4.0 mi Calm Calm - 0.02 in Rain Light Rain
3:54 AM 64.9 °F - 63.0 °F 93% 30.06 in 3.0 mi ESE 5.8 mph - 0.05 in Rain Rain
4:03 AM 64.4 °F - 62.6 °F 94% 30.06 in 2.0 mi ESE 6.9 mph - 0.06 in Rain Heavy Rain
4:28 AM 64.4 °F - 62.6 °F 94% 30.05 in 4.0 mi SE 6.9 mph - 0.11 in Rain Light Rain
4:54 AM 64.9 °F - 64.0 °F 97% 30.04 in 4.0 mi SSE 6.9 mph - 0.11 in   Overcast
5:54 AM 66.0 °F - 64.9 °F 96% 30.04 in 3.0 mi ESE 4.6 mph - 0.00 in   Mostly Cloudy
6:54 AM 66.0 °F - 64.9 °F 96% 30.05 in 3.0 mi East 3.5 mph - N/A   Overcast
7:03 AM 66.2 °F - 64.4 °F 94% 30.05 in 2.0 mi East 4.6 mph - N/A   Overcast
7:10 AM 66.2 °F - 64.4 °F 94% 30.06 in 1.5 mi East 3.5 mph - N/A   Overcast
7:54 AM 66.9 °F - 66.0 °F 97% 30.05 in 1.8 mi ESE 4.6 mph - N/A   Scattered Clouds
8:08 AM 68.0 °F - 66.2 °F 94% 30.06 in 2.0 mi ESE 3.5 mph - N/A   Mostly Cloudy
8:27 AM 69.8 °F - 66.2 °F 88% 30.06 in 4.0 mi SE 4.6 mph - N/A   Mostly Cloudy
8:54 AM 70.0 °F - 66.9 °F 90% 30.06 in 5.0 mi SE 6.9 mph - N/A   Overcast
9:54 AM 73.9 °F - 66.9 °F 79% 30.06 in 7.0 mi SSE 10.4 mph - N/A   Clear
10:54 AM 77.0 °F - 66.9 °F 71% 30.04 in 9.0 mi South 8.1 mph - N/A   Clear
11:54 AM 81.0 °F 83.3 °F 66.9 °F 62% 30.03 in 10.0 mi SSE 10.4 mph - N/A   Clear
12:54 PM 84.0 °F 86.5 °F 66.9 °F 56% 30.01 in 10.0 mi South 11.5 mph - N/A   Clear
1:54 PM 84.9 °F 88.2 °F 68.0 °F 57% 29.98 in 10.0 mi SSE 11.5 mph - N/A   Clear
2:54 PM 84.9 °F 87.1 °F 66.0 °F 53% 29.97 in 10.0 mi Variable 4.6 mph - 0.00 in   Clear
3:54 PM 86.0 °F 89.4 °F 68.0 °F 55% 29.94 in 10.0 mi South 5.8 mph - 0.00 in   Clear
4:54 PM 87.1 °F 90.6 °F 68.0 °F 53% 29.94 in 10.0 mi SSE 11.5 mph - N/A   Mostly Cloudy
5:54 PM 82.9 °F 87.0 °F 70.0 °F 65% 29.94 in 10.0 mi South 8.1 mph - N/A   Clear
6:54 PM 80.1 °F 82.1 °F 66.0 °F 62% 29.94 in 10.0 mi SSW 6.9 mph - N/A   Clear
7:54 PM 75.0 °F - 66.0 °F 73% 29.94 in 10.0 mi SSW 5.8 mph - N/A   Clear
8:54 PM 70.0 °F - 66.0 °F 87% 29.95 in 10.0 mi Calm Calm - N/A   Clear
9:54 PM 72.0 °F - 68.0 °F 87% 29.95 in 9.0 mi ESE 5.8 mph - N/A   Clear
10:54 PM 72.0 °F - 68.0 °F 87% 29.96 in 9.0 mi Calm Calm - N/A   Clear
11:54 PM 71.1 °F - 68.0 °F 90% 29.96 in 8.0 mi Calm Calm - N/A   Clear